The person above my thread gave a good answer. The only 100% safe wallet = hardware wallet.
If you are looking for a web wallet then I would recommend myetherwallet
Some say, that hardware wallet is the most secure. But some say that web wallet is easy and free.
First of all, we need to know. What do you mean by the "most secure" wallet ? Secure from what ? Is it from hacker or problems ?
In my opinion, web wallet like blockchain is secure enough. Because you will need a email confirmation if you want to login.
You can setting second password, and phone SMS to login or do transactions. I guess there are a lot way to secure it.
Hardware wallet is not free, if the hardware is broken, what happen to your money ?